polaris-offices-viewer/dist/esm/drivers/driver-viewer.css

.driver-message {
  padding: 46px;
  background: white;
  margin: auto;
  text-align: center;
}

.pg-driver-view {
  margin: auto;
  width: 100%;
  height: 100%;

  .loading {
    position: relative;
  }
}